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Design off-shore wind climate

Abstract

Specific recommendations of off-shore turbulence intensities, applicable for design purposes, are lacking in the present IEC-code. The present off-shore wind climate analysis presents the distribution of the turbulence standard deviation around the mean turbulence standard deviation, conditioned on the mean wind speed. Measured distributions, based on a huge amount of measuring data from two shallow water off-shore sites, are parameterized by fitting to a three parameter Weibull distribution. Combining a simple heuristic load model with the parameterized probability density functions of the turbulence standard deviations, an empirical off-shore design turbulence intensity is evaluated that in average yields the same fatigue damage as the distributed turbulence intensity. The proposed off-shore design turbulence intensity is, within the IEC code framework, applicable for extreme as well as for fatigue load determination. (au)
Authors:
Larsen, G C; Joergensen, H E [1] 
  1. Risoe National Lab., Wind Energy and Atmospheric Physics Dept., Roskilde (Denmark)
Publication Date:
Mar 01, 1999
Product Type:
Conference
Report Number:
RISO-R-1114(EN); CONF-990314-
Reference Number:
SCA: 170100; PA: DK-99:001410; EDB-99:087278; SN: 99002098316
Resource Relation:
Conference: EWEC`99. European wind energy conference, Nice (France), 1-5 Mar 1999; Other Information: PBD: Mar 1999; Related Information: Is Part Of Contributions from the Department of Wind Energy and Atmospheric Physics to EWEC `99 in Nice, France; Larsen, Gunnar C.; Westermann, Kirsten; Noergaard, Per [eds.]; PB: 256 p.
Subject:
17 WIND ENERGY; OFFSHORE SITES; TURBULENCE; WIND LOADS; PARAMETRIC ANALYSIS; WIND; VELOCITY
OSTI ID:
679628
Research Organizations:
Risoe National Lab., Roskilde (Denmark). Wind Energy and Atmospheric Physics Dept.
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE99747779; CNN: Contract JOR3-CT95-0026; ISBN 87-550-2542-0; TRN: DK9901410
Availability:
OSTI as DE99747779
Submitting Site:
DK
Size:
pp. 145-148
Announcement Date:

Citation Formats

Larsen, G C, and Joergensen, H E. Design off-shore wind climate. Denmark: N. p., 1999. Web.
Larsen, G C, & Joergensen, H E. Design off-shore wind climate. Denmark.
Larsen, G C, and Joergensen, H E. 1999. "Design off-shore wind climate." Denmark.
@misc{etde_679628,
title = {Design off-shore wind climate}
author = {Larsen, G C, and Joergensen, H E}
abstractNote = {Specific recommendations of off-shore turbulence intensities, applicable for design purposes, are lacking in the present IEC-code. The present off-shore wind climate analysis presents the distribution of the turbulence standard deviation around the mean turbulence standard deviation, conditioned on the mean wind speed. Measured distributions, based on a huge amount of measuring data from two shallow water off-shore sites, are parameterized by fitting to a three parameter Weibull distribution. Combining a simple heuristic load model with the parameterized probability density functions of the turbulence standard deviations, an empirical off-shore design turbulence intensity is evaluated that in average yields the same fatigue damage as the distributed turbulence intensity. The proposed off-shore design turbulence intensity is, within the IEC code framework, applicable for extreme as well as for fatigue load determination. (au)}
place = {Denmark}
year = {1999}
month = {Mar}
}